Lashinda Demus holds the U.S record in the 400 meter hurdles, with a time of 52.47 seconds, the third fastest ever recorded. While her twin 5-year-old boys cheered her on, she brought home a silver medal from the 2012 London Olympics. But when it comes to her full set of upper and lower braces, there's no silver to be seen!

Demus is a top-ranked competitor, a wife and a mom — and an adult who is currently in orthodontic treatment. With her orthodontist's approval, she chose clear ceramic braces. These are just one of the treatment options available to adult patients, many of whom prefer a less noticeable style of orthodontic appliance.

As many as three-quarters of adults are thought to have some form of orthodontic problem. Common issues include teeth that are crowded too closely together, or ones that have drifted too far apart after an extraction or other tooth loss. It is believed that straightened teeth are easier to clean and better for chewing — they can also improve an adult's social life, and even his or her career prospects!

Some grown-ups may hesitate to consider orthodontic treatment because they remember the “railroad tracks” they saw in junior high school. In fact, there have been many changes in orthodontic appliances in the past few years. Two popular choices for adults are colorless braces (the kind Demus wears) and clear orthodontic aligners.

Colorless ceramic braces are made of high-tech composite materials. They resist staining, and are less noticeable because their translucent appearance blends with the teeth. Often, a single wire is the only part that's plainly visible. Sometimes it's even possible to place them on the lingual (tongue) side of the teeth.

Clear aligners are an alternative to braces that are available to adults and teens. Instead of wires and attachments, these consist of a series of transparent, removable trays that are placed over the teeth and worn 20 hours per day. Over a period of six months to two years, the teeth are gradually straightened as you progress from one computer-designed tray to the next. Best of all, you can remove the trays completely to clean your teeth, and for important occasions.

Which one is right for you? It depends. While aligners have been successful in treating mild to moderate spacing issues, more difficult problems with the bite may require a more traditional form of braces. Also, there are a few health problems which might need to be attended to before orthodontic treatment is begun. The best way to learn about your options is to come in for a consultation. But remember: if you want a better smile, it's never too late.